From Longman Dictionary of Contemporary Englishimmutableim‧mu‧ta‧ble /ɪˈmjuːtəbəl/ adjective formal CHANGE FROM ONE THING TO ANOTHERnever changing or impossible to change This decision should not be seen as immutable. —immutably adverb —immutability /ɪˌmjuːtəˈbɪləti/ noun [uncountable]
Examples from the Corpus
immutable• In other words the rules of precedence and other aspects of diplomatic ceremonial were not immutable.• Maybe this once, the world will display itself as immutable.• Conservatives dug in and insisted that dogmas were immutable and hierarchies indispensable.• That rule was immutable, and woe betide anyone who disregarded it.• I do not believe that this perceptual process is either universal or immutable, but it is ubiquitous and extremely potent.• an immutable fact• There was no immutable tendency for it to settle at the particular level where all willing workers had a chance for employment.• The principles of credit rating are immutable, they insist; their credit opinions are never swayed by the judgments of others. 